Commercial Incident-To Rules Are Per-Payer: How to Find Yours
Summary
Commercial insurers are not bound by Medicare's incident-to rule, and each one writes its own version of it or none at all. Medicare's conditions sit in federal regulation and govern Medicare claims only. A commercial plan's incident-to terms live in its published reimbursement policy and, above that, in the contract you signed, which can supersede the policy. Read both before billing an NP's work under anyone else's NPI.
By Gale Editorial · Updated 2026-09-01. Every figure cited to a dated source. How we write.
Do commercial insurers have to follow Medicare's incident-to rules?
No. Medicare's incident-to rule binds Medicare claims, and nothing in it reaches a commercial plan. Each insurer decides for itself whether it recognizes incident-to billing at all, on what supervision standard, under whose NPI the claim goes out, and with what modifier attached. For any one plan the binding answer sits in that plan's published policy and in the contract you signed.
The difference is structural. Medicare's rule is a federal regulation, 42 CFR 410.26, and it sets when a service furnished by auxiliary personnel under a practitioner's supervision may be billed by that supervising practitioner 1Ref 1Office of the Federal Register (2026).42 CFR 410.26 — Services and supplies incident to a physician's professional services.The federal regulation behind the Medicare rule: the direct supervision requirement, its virtual-presence allowance over real-time audio and video for services without a 010 or 090 global surgery indicator, and the provision that only the supervising practitioner may bill Medicare for an incident-to service.. A commercial insurer is not paying a Medicare claim. It pays under a contract, on the terms in that contract and in the reimbursement policies the contract incorporates by reference.
The trouble starts when a commercial policy looks like Medicare's. A plan that recognizes incident-to can keep Medicare's shape and still change something that decides the claim: the supervision definition, the modifier, the place of service, or which practitioner may appear as the rendering provider. A denial or a post-payment takeback turns on those details rather than on the resemblance.
What Medicare's rule requires, so you have something to compare
Under Medicare, when auxiliary personnel furnish a service incident to a supervising practitioner's professional service, that practitioner bills it and it is reimbursed at 100% of the physician fee schedule, while the same clinician's service billed under an NP's own NPI is reimbursed at 85% 2Ref 2Centers for Medicare & Medicaid Services (2026).Incident To Services & Supplies.CMS's own statement of the Medicare incident-to conditions and the payment fork: an incident-to service billed by the supervising practitioner is reimbursed at 100% of the physician fee schedule while a service under the NP's own NPI is reimbursed at 85%, and the conditions (direct supervision, a practitioner's prior personal service) that make the route unavailable in a solo NP-owned practice with no supervising physician.. Medicare pays an NP 85% of the fee schedule amount for work a physician would be paid the full amount for.
The conditions are the price of that 100%. The regulation generally requires direct supervision, meaning the supervising practitioner is immediately available. Virtual presence over real-time audio and video technology may satisfy that, audio-only excluded, for services carrying no 010 or 090 global surgery indicator 1Ref 1Office of the Federal Register (2026).42 CFR 410.26 — Services and supplies incident to a physician's professional services.The federal regulation behind the Medicare rule: the direct supervision requirement, its virtual-presence allowance over real-time audio and video for services without a 010 or 090 global surgery indicator, and the provision that only the supervising practitioner may bill Medicare for an incident-to service.. Only the supervising practitioner may bill Medicare for the incident-to service 1Ref 1Office of the Federal Register (2026).42 CFR 410.26 — Services and supplies incident to a physician's professional services.The federal regulation behind the Medicare rule: the direct supervision requirement, its virtual-presence allowance over real-time audio and video for services without a 010 or 090 global surgery indicator, and the provision that only the supervising practitioner may bill Medicare for an incident-to service..
Medicare also covers services and supplies incident to an NP's own services when the same 410.26 requirements are met, so an NP can be the supervising practitioner in that arrangement rather than only the supervised one 3Ref 3Office of the Federal Register / Centers for Medicare & Medicaid Services (2026).§ 410.75 Nurse practitioners' services..That Medicare covers services incident to an NP's own services only when the 42 CFR 410.26 requirements are met, and that an NP's professional services are paid only when personally performed by the NP.. And an NP's professional services are paid only when the NP personally performed them, so supervising another clinician's visit is not the same billable event as furnishing one 3Ref 3Office of the Federal Register / Centers for Medicare & Medicaid Services (2026).§ 410.75 Nurse practitioners' services..That Medicare covers services incident to an NP's own services only when the 42 CFR 410.26 requirements are met, and that an NP's professional services are paid only when personally performed by the NP..
One payer's published policy, read next to Medicare's
UnitedHealthcare publishes both halves of this in writing, which makes it a usable worked example. Its Advanced Practice Health Care Provider policy, number 2026R5009A, says services by an NP, PA or CNS should be reported under that provider's own NPI where the provider is eligible to bill directly. The same policy reimburses a network advanced practice provider at 85% of the applicable physician fee schedule unless otherwise contracted with a non-physician fee schedule 4Ref 4UnitedHealthcare (2026).Advanced Practice Health Care Provider Policy, Professional.UnitedHealthcare as the article's single named worked example: its definition of an Advanced Practice Health Care Provider, its default that such services are reported under the provider's own NPI where the provider may bill directly, its 85%-of-the-applicable-physician-fee-schedule rate unless otherwise contracted with a non-physician fee schedule, and its own statement that other factors including the practitioner's contract may supplement, modify or supersede the policy..
None of that generalizes. It is one company's document, reissued on that company's own schedule, and quoting it at a different insurer buys nothing.
A separate policy, 2026R5025A, carries the same payer's incident-to terms, and it writes its own supervision standard rather than adopting Medicare's by reference. The plan calls it direct personal supervision and defines it as the supervising provider being present in the location of service and immediately available to provide assistance and direction 5Ref 5UnitedHealthcare (2026).Services Incident-to a Supervising Health Care Provider Policy, Professional.The same payer's separate incident-to policy as the worked example: its own 'direct personal supervision' definition (present in the location of service and immediately available), its SA-modifier requirement when an advanced practice provider's incident-to service is reported under the supervising physician's NPI, and the policy number and version that let a reader re-check it.. It also requires the SA modifier when an advanced practice provider's incident-to service is reported under the supervising physician's NPI 5Ref 5UnitedHealthcare (2026).Services Incident-to a Supervising Health Care Provider Policy, Professional.The same payer's separate incident-to policy as the worked example: its own 'direct personal supervision' definition (present in the location of service and immediately available), its SA-modifier requirement when an advanced practice provider's incident-to service is reported under the supervising physician's NPI, and the policy number and version that let a reader re-check it..
| Medicare | UnitedHealthcare commercial policy | |
|---|---|---|
| Where the rule lives | 42 CFR 410.26, a federal regulation 1Ref 1Office of the Federal Register (2026).42 CFR 410.26 — Services and supplies incident to a physician's professional services.The federal regulation behind the Medicare rule: the direct supervision requirement, its virtual-presence allowance over real-time audio and video for services without a 010 or 090 global surgery indicator, and the provision that only the supervising practitioner may bill Medicare for an incident-to service. | Reimbursement policy 2026R5025A, versioned and reissued by the payer 5Ref 5UnitedHealthcare (2026).Services Incident-to a Supervising Health Care Provider Policy, Professional.The same payer's separate incident-to policy as the worked example: its own 'direct personal supervision' definition (present in the location of service and immediately available), its SA-modifier requirement when an advanced practice provider's incident-to service is reported under the supervising physician's NPI, and the policy number and version that let a reader re-check it. |
| Supervision standard | Direct supervision, immediately available, virtual presence by real-time audio and video allowed for many services 1Ref 1Office of the Federal Register (2026).42 CFR 410.26 — Services and supplies incident to a physician's professional services.The federal regulation behind the Medicare rule: the direct supervision requirement, its virtual-presence allowance over real-time audio and video for services without a 010 or 090 global surgery indicator, and the provision that only the supervising practitioner may bill Medicare for an incident-to service. | Direct personal supervision, present in the location of service and immediately available 5Ref 5UnitedHealthcare (2026).Services Incident-to a Supervising Health Care Provider Policy, Professional.The same payer's separate incident-to policy as the worked example: its own 'direct personal supervision' definition (present in the location of service and immediately available), its SA-modifier requirement when an advanced practice provider's incident-to service is reported under the supervising physician's NPI, and the policy number and version that let a reader re-check it. |
| Default for an NP's own claim | Under the NP's own NPI at 85% of the fee schedule 2Ref 2Centers for Medicare & Medicaid Services (2026).Incident To Services & Supplies.CMS's own statement of the Medicare incident-to conditions and the payment fork: an incident-to service billed by the supervising practitioner is reimbursed at 100% of the physician fee schedule while a service under the NP's own NPI is reimbursed at 85%, and the conditions (direct supervision, a practitioner's prior personal service) that make the route unavailable in a solo NP-owned practice with no supervising physician. | Under the NP's own NPI where eligible to bill directly, at 85% unless otherwise contracted 4Ref 4UnitedHealthcare (2026).Advanced Practice Health Care Provider Policy, Professional.UnitedHealthcare as the article's single named worked example: its definition of an Advanced Practice Health Care Provider, its default that such services are reported under the provider's own NPI where the provider may bill directly, its 85%-of-the-applicable-physician-fee-schedule rate unless otherwise contracted with a non-physician fee schedule, and its own statement that other factors including the practitioner's contract may supplement, modify or supersede the policy. |
| Claim format | Billed by the supervising practitioner when the conditions are met 2Ref 2Centers for Medicare & Medicaid Services (2026).Incident To Services & Supplies.CMS's own statement of the Medicare incident-to conditions and the payment fork: an incident-to service billed by the supervising practitioner is reimbursed at 100% of the physician fee schedule while a service under the NP's own NPI is reimbursed at 85%, and the conditions (direct supervision, a practitioner's prior personal service) that make the route unavailable in a solo NP-owned practice with no supervising physician. | SA modifier appended when reported under the supervising physician's NPI 5Ref 5UnitedHealthcare (2026).Services Incident-to a Supervising Health Care Provider Policy, Professional.The same payer's separate incident-to policy as the worked example: its own 'direct personal supervision' definition (present in the location of service and immediately available), its SA-modifier requirement when an advanced practice provider's incident-to service is reported under the supervising physician's NPI, and the policy number and version that let a reader re-check it. |
The two columns agree on the percentage and disagree on most of what produces it. Version numbers matter too: the advanced practice policy carries an anniversary review date of September 1, 2026 4Ref 4UnitedHealthcare (2026).Advanced Practice Health Care Provider Policy, Professional.UnitedHealthcare as the article's single named worked example: its definition of an Advanced Practice Health Care Provider, its default that such services are reported under the provider's own NPI where the provider may bill directly, its 85%-of-the-applicable-physician-fee-schedule rate unless otherwise contracted with a non-physician fee schedule, and its own statement that other factors including the practitioner's contract may supplement, modify or supersede the policy., so the copy you read last year is not evidence about tomorrow's claim.
Where a plan's binding answer sits
In the contract, above the policy. UnitedHealthcare's own advanced practice policy states that other factors affecting reimbursement may supplement, modify or in some cases supersede it, and a practitioner's contract is one of those factors 4Ref 4UnitedHealthcare (2026).Advanced Practice Health Care Provider Policy, Professional.UnitedHealthcare as the article's single named worked example: its definition of an Advanced Practice Health Care Provider, its default that such services are reported under the provider's own NPI where the provider may bill directly, its 85%-of-the-applicable-physician-fee-schedule rate unless otherwise contracted with a non-physician fee schedule, and its own statement that other factors including the practitioner's contract may supplement, modify or supersede the policy.. So a published policy tells you the plan's default, a contract tells you what you agreed to, and where the two differ it is the contract that pays the claim.
This is why the 85% clause in commercial contracts reads the way it does. UnitedHealthcare's published default matches Medicare's number 4Ref 4UnitedHealthcare (2026).Advanced Practice Health Care Provider Policy, Professional.UnitedHealthcare as the article's single named worked example: its definition of an Advanced Practice Health Care Provider, its default that such services are reported under the provider's own NPI where the provider may bill directly, its 85%-of-the-applicable-physician-fee-schedule rate unless otherwise contracted with a non-physician fee schedule, and its own statement that other factors including the practitioner's contract may supplement, modify or supersede the policy., but it arrives as a negotiated rate on a fee schedule exhibit rather than as a statutory ceiling. A different exhibit is a different answer at the same insurer, and the published policy will not show it to you.
Ask for the incident-to language in writing before building a schedule around it. An email from a network representative that names the policy number and answers whether the plan pays a service furnished by an employed NP under a supervising physician's NPI is a record you can attach to an appeal later. File it with the contract rather than in the billing system.
How to find your own plan's incident-to policy
Go to the payer's provider portal, read its own policy library, then read your contract against what you find. Anthem publishes its provider policies on its provider portal 6Ref 6Anthem (2026).Anthem Provider Policies.That Anthem publishes its provider policies on its own provider portal, cited as one named example of where a reader looks up a plan's published rules. Not used for what any policy says.. Aetna publishes its clinical policy bulletins the same way 7Ref 7Aetna (2026).Aetna Clinical Policy Bulletins.That Aetna publishes its clinical policy bulletins on its own provider portal, cited as one named example of where a reader looks up a plan's published rules. Not used for what any policy says.. UnitedHealthcare's commercial reimbursement policies each carry a policy number and a version, so a document like 2026R5025A can be checked against whatever is current before anyone relies on it 5Ref 5UnitedHealthcare (2026).Services Incident-to a Supervising Health Care Provider Policy, Professional.The same payer's separate incident-to policy as the worked example: its own 'direct personal supervision' definition (present in the location of service and immediately available), its SA-modifier requirement when an advanced practice provider's incident-to service is reported under the supervising physician's NPI, and the policy number and version that let a reader re-check it..
The sequence is short enough to run between patients, once per plan:
1. Search the plan's policy library for incident-to and separately for advanced practice, since a payer may file supervision rules and rendering-NPI rules in two documents. 2. Write down the policy number and version, and re-check both at each contract year. 3. Open the contract and the fee schedule exhibit attached to it, which is where a rate differing from the published default will be sitting. 4. Send the network representative one written question that names the policy number and asks whether the plan pays the service under a supervising physician's NPI, and what modifier it expects. 5. Keep the answer with the contract, not in a thread.
Each plan on your panel needs its own pass, including two products administered by the same company under different lines of business. Nothing here scales, which is one reason a solo practice may decide to bill everything under the rendering clinician's own NPI.
What this means in an NP-owned practice
If you own the practice and no physician furnishes and supervises care in it, incident-to billing in an NP-owned practice mostly does not arise. Medicare's route requires a practitioner who has already personally treated the patient, and a supervising practitioner who remains immediately available 2Ref 2Centers for Medicare & Medicaid Services (2026).Incident To Services & Supplies.CMS's own statement of the Medicare incident-to conditions and the payment fork: an incident-to service billed by the supervising practitioner is reimbursed at 100% of the physician fee schedule while a service under the NP's own NPI is reimbursed at 85%, and the conditions (direct supervision, a practitioner's prior personal service) that make the route unavailable in a solo NP-owned practice with no supervising physician., and a plan that mirrors Medicare requires the same supervising practitioner, in its own words. Claims go out under your own NPI at whatever the contract says.
That changes the week you hire your first NP or PA. There is then a supervising clinician in the suite, and the incident-to question becomes live at every plan you bill, one policy at a time. Under Medicare the arrangement still has to satisfy 410.26 in full, and an NP may be the supervising practitioner for services furnished incident to the NP's own services 3Ref 3Office of the Federal Register / Centers for Medicare & Medicaid Services (2026).§ 410.75 Nurse practitioners' services..That Medicare covers services incident to an NP's own services only when the 42 CFR 410.26 requirements are met, and that an NP's professional services are paid only when personally performed by the NP..
Scope of practice and payment are separate questions, and they get merged here. Whether your state requires a collaborative agreement or protocol is a scope-of-practice question your board answers, and it governs whether you may furnish the care. How a plan pays for that care is answered by the contract and the reimbursement policy. Practicing independently under state law obliges no insurer to pay at a physician rate.
The working version fits on one line of your billing setup, per plan: rendering NPI, supervising NPI if the plan allows one, the modifier it wants, and the policy number you read it in.
Common questions
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- 1.Office of the Federal Register (2026). 42 CFR 410.26 — Services and supplies incident to a physician's professional services. eCFR. link ✓The federal regulation behind the Medicare rule: the direct supervision requirement, its virtual-presence allowance over real-time audio and video for services without a 010 or 090 global surgery indicator, and the provision that only the supervising practitioner may bill Medicare for an incident-to service.
- 2.Centers for Medicare & Medicaid Services (2026). Incident To Services & Supplies. CMS.gov — Physician Fee Schedule, Advanced Practice Non-Physician Practitioners. link ✓CMS's own statement of the Medicare incident-to conditions and the payment fork: an incident-to service billed by the supervising practitioner is reimbursed at 100% of the physician fee schedule while a service under the NP's own NPI is reimbursed at 85%, and the conditions (direct supervision, a practitioner's prior personal service) that make the route unavailable in a solo NP-owned practice with no supervising physician.
- 3.Office of the Federal Register / Centers for Medicare & Medicaid Services (2026). § 410.75 Nurse practitioners' services.. Electronic Code of Federal Regulations (42 CFR Part 410, Subpart B). link ✓That Medicare covers services incident to an NP's own services only when the 42 CFR 410.26 requirements are met, and that an NP's professional services are paid only when personally performed by the NP.
- 4.UnitedHealthcare (2026). Advanced Practice Health Care Provider Policy, Professional. UnitedHealthcare Commercial and Individual Exchange Reimbursement Policy, CMS 1500, Policy Number 2026R5009A. link ✓UnitedHealthcare as the article's single named worked example: its definition of an Advanced Practice Health Care Provider, its default that such services are reported under the provider's own NPI where the provider may bill directly, its 85%-of-the-applicable-physician-fee-schedule rate unless otherwise contracted with a non-physician fee schedule, and its own statement that other factors including the practitioner's contract may supplement, modify or supersede the policy.
- 5.UnitedHealthcare (2026). Services Incident-to a Supervising Health Care Provider Policy, Professional. UnitedHealthcare Commercial and Individual Exchange Reimbursement Policy, CMS 1500, Policy Number 2026R5025A. link ✓The same payer's separate incident-to policy as the worked example: its own 'direct personal supervision' definition (present in the location of service and immediately available), its SA-modifier requirement when an advanced practice provider's incident-to service is reported under the supervising physician's NPI, and the policy number and version that let a reader re-check it.
- 6.Anthem (2026). Anthem Provider Policies. Anthem provider portal. link ✓That Anthem publishes its provider policies on its own provider portal, cited as one named example of where a reader looks up a plan's published rules. Not used for what any policy says.
- 7.Aetna (2026). Aetna Clinical Policy Bulletins. Aetna provider portal. link ✓That Aetna publishes its clinical policy bulletins on its own provider portal, cited as one named example of where a reader looks up a plan's published rules. Not used for what any policy says.
https://www.gale.care/for-providers/pq-np-commercial-incident-to-policy · 7 sources. Competitor details are cited to dated public sources and maintained as they change; figures are estimates, not commitments. Synthetic demonstration.